Folding cross-cut saw stand

ABSTRACT

A folding stand ( 1 ) for a cross-cut saw or the like, has an elongate carrying body ( 4 ) for a cross-cut saw, at the ends of which two legs ( 3 ) are hinged. The legs pivot from a storage position, in which they are placed parallel to the carrying body ( 4 ), into an operating position, in which they are placed in a trapezoidal position relative to each other. The cross-cut saw is detachably fixed to the carrying body ( 4 ). The carrying body ( 4 ) is configured as a frame ( 4 ), while the fixing device forms brackets ( 5, 5′, 5 ″) interacting with the frame.

CROSS REFERENCES TO RELATED APPLICATIONS

The present application claims priority of German patent application no.10204417.1 filed on Jan. 30, 2002, and International application no.PCT/EP03/00773 filed on Jan. 27, 2003, the entire disclosures of whichare herein incorporated by reference.

BACKGROUND OF THE INVENTION

The invention relates to a folding stand. In embodiments, the presentinvention can be used for a cross-cut saw or the like. In an embodiment,the folding stand has an elongate carrying body which is intended for across-cut saw and on which two legs are articulated at each of the ends,it being possible for these legs to be pivoted from a storage position,in which they are located parallel to the carrying body, into a useposition, in which they are located trapezoidally in relation to oneanother, and it being possible for the cross-cut saw to be mounted, inparticular in a releasable manner, on the carrying body by securingmeans.

A folding cross-cut saw stand is described in U.S. Pat. No. 5,119,903.The carrying body here is formed by a trapezoidal box which has in itsinterior, at each of its ends, articulations on which legs are secured,it being possible for these legs to be pivoted out into a use position,in which the legs are located trapezoidally in relation to one another,from a storage position, in which the legs have been pivoted into thebox. In the use position, the carrying body is spaced apart from theunderlying surface by a distance which is determined substantially bythe length of the legs. The legs can latch with the carrying body in thestorage position and in the use position.

A cross-cut saw may be fastened on the surface of the carrying body.

A similar stand is described in U.S. Pat. No. 3,999,777. This stand alsohas a carrying body from which legs project trapezoidally in the useposition.

SUMMARY OF THE INVENTION

It can be an advantage in embodiments of the invention to develop astand in a straightforward manner in production terms.

In embodiments of the present invention, a folding stand has one or moreof the following features, including a carrying body which is a frameand the securing means comprises brackets interacting with the frame.The frame may be a tubular frame which is formed by at least two tubesrunning parallel to one another. These tubes may have a quadrilateralprofile. The tubes are connected to one another at their ends in eachcase by connecting components. These connecting components formcross-members which provide the pivot bearings for the legs. In thestorage position, the legs, which are likewise formed by quadrilateraltubes, are located parallel to the tubes of the frame. The brackets, ofwhich preferably two are provided, engage through the frame interspaceby way of their clamping means, which may be screws. A pressure-exertingcomponent in the form of a strip, which is disposed on the underside ofthe frame, can be braced against the bracket located on the framesurface. Like the pressure-exerting strip, the bracket is preferablyformed by a punched and bent part. It is possible for thepressure-exerting strip to form a U-shaped component with U-crosspiecesprojecting into the frame interspace, in order thus to ensure that thebracket is fixed in position. The bracket may also have a crosspieceportion which projects into the frame interspace. This ensures that anengagement edge of the bracket, which is formed on the clamping side,runs substantially transversely to the direction in which the frameextends. This engagement edge can engage in a groove of the carryingplate which is to be secured on the top side of the frame, and on whichthe cross-cut saw can be mounted. The base of the cross-cut saw canpreferably be fastened on two carrying plates. Each of these carryingplates can be secured on the frame by a bracket. As a result of thegroove/engagement-edge guidance, the carrying plate can be displacedtransversely to the direction in which the frame extends. The bracketsthemselves can be displaced in the direction in which the frame extends,so that it is possible for the entire cross-cut saw not just to beremoved from the frame, but also to be adjusted on the frame in themanner of a compound table. The frame preferably has two tubes which arelocated one beside the other, and are preferably even in contact, inwhich draw-out extensions are inserted. These extensions may be as longas the tubes accommodating them, so that telescopic association ispossible. The extensions can be fixed in their respective extendedpositions. Clamping screws, for example, are provided for this purpose.In each case one workpiece support is located at the end of theextension. These workpiece supports are height-adjustable. For thispurpose, a tubular guide portion is provided at the end of the tubularextension, a tubular portion of the workpiece carrier being inserted inthis guide portion, and it likewise being possible for this workpiececarrier to be secured to the guide by means of a clamping screw. Thefree end of the supporting tube carries a shoulder which is formed by asheet-metal component bent in a U-shaped manner. The portion of thisshoulder on which the workpiece comes to rest is rounded. There isT-shaped association with the supporting tube. The T-shaped sheet-metalcomponent can be pivoted stiffly over a small region about its securingpin in relation to the supporting tube. The supporting tube has anopening into which an angled, strong wire is inserted. The rotaryposition of the wire is predetermined as a result of the wire beingflattened on one side and of a corresponding configuration of theopening and/or of a clamping screw which acts against the flattenedportion. A free portion of the wire forms a length/width stop. This freeportion projects beyond the supporting shoulder, which carries theworkpiece. The free end can be displaced transversely to the directionin which the extension extends and can be fixed in position by the saidscrew. Further workpiece carriers can also be located at the end of thecarrying body. Like the workpiece carriers described above, they may besecured to a tube. They are then secured to a frame-forming tube. Forthis purpose, a portion of the tube in question can project beyond thecross-member. The legs may be height-adjustable. For this purpose, it ispossible for extensions to be drawn telescopically out of the legs.Furthermore, it is provided that at least one pair of legs carriesrollers which, in the use position, are spaced apart from the set-downsurface and, in the storage position, are oriented downward, so that thefolded cross-cut saw stand can be transported via the rollers. The legscan latch in the region of their rotary bearings both in the storageposition and in the use position. Spring-activated latchingprotuberances are provided for this purpose, these being formed by theends of latching pins which are inserted in a spring-biased state inbores of the tubular leg and have their heads entering into latchingcutouts of the cross-members.

Additional features and advantages of the present invention aredescribed in, and will be apparent from, the following DetailedDescription of the Invention and the figures.

BRIEF DESCRIPTION OF THE FIGURES

An exemplary embodiment of the invention is explained hereinbelow withreference to accompanying figures, in which:

FIG. 1 shows a perspective illustration of the exemplary embodiment ofthe invention,

FIG. 2 shows an enlarged detail of the region designated II in FIG. 1,

FIG. 3 shows the exemplary embodiment in elevation,

FIG. 4 shows the exemplary embodiment in a side view from the leftaccording to FIG. 3,

FIG. 5 shows the exemplary embodiment in a side view from the right inFIG. 3,

FIG. 6 shows a plan view,

FIG. 7 shows a bottom view,

FIG. 8 shows the exemplary embodiment in the folded state,

FIG. 9 shows an enlarged illustration of the detail IX from FIG. 3,

FIG. 10 shows a section along line X-X in FIG. 9,

FIG. 11 shows an illustration according to FIG. 9 in a pivoted position,

FIG. 12 shows an illustration according to FIG. 11 in a further-pivotedposition,

FIG. 13 shows an enlarged illustration of the detail designated XIII inFIG. 6, and

FIG. 14 shows a section along line XIV-XIV in FIG. 13.

DETAILED DESCRIPTION OF THE INVENTION

The cross-cut saw stand 1 serves for accommodating a cross-cut saw orthe like. For this purpose, the stand 1 has a carrying body 4 which isformed by a frame. The frame surface is located in a horizontal plane.One or more carrying plates 6 or tool mounting base may be positioned onthe frame, which is formed substantially by two tubes 2, 2′ and 2″. Inthe exemplary embodiment, two carrying plates 6 rest on the frame.

The base of a cross-cut saw can be mounted securely on the carryingplates 6, for which purpose the base is connected, for example byscrews, to the carrying plates. It is thus possible to use the cross-cutsaw both together with the stand 1, if it is fastened on the carryingplates, and without the stand 1, for example on the floor.

The carrying plates 6 are fixed on the carrying body 4 by brackets 5.For this purpose, each of the two carrying plates 6 has a groove 9running transversely to the longitudinal extent of the carrying body 4.An engagement edge 10 of the bracket 5, which is formed as a punched andbent part, engages in this groove 9. This ensures that the carryingplate 6 can be displaced transversely when the bracket 5 is released. Onthe other hand, the bracket 5 can be guided in the frame 4 transverselyto the direction in which the groove 9 extends. For this purpose, thebracket 5, which is substantially trapezoidal, has a rear crosspiece 5′which, although still resting on the frame legs 2, continues centrallyinto a narrower crosspiece portion 5″ which engages in the frameinterspace 8. The abutment of bracket 5 is provided by apressure-exerting strip 7, which presses from beneath against the framelegs 2, 2′, 2″. The pressure-exerting strip 7 is also formed as apunched and bent part. The pressure-exerting strip 7 has a substantiallyU-shaped profile, the two U-crosspieces projecting into the frameinterspace 8 and having a width which corresponds to the clear widthbetween the frame legs 2, 2′, 2″. The pressure-exerting strip 7 isconnected to the bracket 5 via a clamping screw (not illustrated in thedrawings). The clamping screw engages through the bracket approximatelycentrally, that is between the crosspiece 5′, which rests in certainregions on the frame leg 2, 2′, 2″, and the engagement edge 10, so thatthe necessary retaining force can be applied.

The two frame legs 2, 2′, 2″ are connected to one another bycross-members 18. The cross-members 18 are located at the respectiveends of the frame leg 2, which is formed by a quadrilateral tube.

The frame leg which is spaced apart from the frame leg 2 by the frameinterspace 8 is formed by two parallel tubes 2′, 2″ in contact with oneanother. These two tubes contain extensions 12 which, like the tubesholding them, have a quadrilateral profile. The extensions 12 can bedrawn out of the tubes 2′, 2″ and fixed in these positions by clampingscrews (not illustrated).

At the respective end, each extension 12 carries a tube portion 13 witha vertically running axis. This tube portion 13 forms a support carrier.A tubular workpiece support carrier 14 is inserted in this supportcarrier 13. A U-profiled metal sheet is located at the upper end of theworkpiece support carrier 14. This U-profiled metal sheet forms aworkpiece carrier 22, the upper edge of which forms a rounded carryingshoulder 16. The height of the carrying shoulder 16 can be produced byvertical displacement of the workpiece support carrier 14 in the supportcarrier 13. Here too, a clamping screw (not illustrated) can provide anarresting action. The U-profiled metal sheet 22 is connected to theworkpiece support carrier 14 by means of a connecting screw, so that itis possible to adjust the tilting position of the carrying shoulder 16within a small range. The tilting displacement takes place stiffly.

The workpiece support carrier 14 contains an opening in the horizontaldirection. A stiff wire 15 which is bent twice through 90° in each caseis inserted into this opening. In order to fix the rotary position ofthe wire, the end of the latter which is inserted into the opening ofthe workpiece support carrier has a flattened portion, against which aclamping screw can be clamped. For fixing the rotation, thecorresponding opening may also have a contour adapted to thecross-sectional profile of the wire. A portion of the wire 15 projectsbeyond the carrying shoulder 16 and forms a stop for the workpiece. Thisstop 15 can perform both the function of a length stop and the functionof a width stop, depending on the horizontal position in which it issecured by displacement of the non-round wire portion inserted into theopening of the workpiece support carrier 14. The length adjustment ofthe stop 15 takes place by displacement of the extension 12 in the tube2′, 2″ which carries it.

Further workpiece supports are located at the ends of the respectivetubes 2′, 2″, these further workpiece supports likewise being associatedwith a support carrier 13 in a height-adjustable manner by a workpiecesupport carrier 14 and, in a previously described manner, having aU-profile with a rounded crosspiece as carrying shoulder 16.

The cross-members 18, which are formed by punched and bent parts, formpivot bearings for the legs 3. In the use position, which is shown forexample in FIG. 1, the legs 3 have been pivoted out, so that they arelocated trapezoidally in relation to one another. The length of the legs3 is less than the distance by which the two cross-members 18 are spacedapart from one another. The cross-members 18 each form leg fastenings19, which each have a rotary bearing 11 about which in each case a leg 3can be pivoted. The arrangement of the rotary bearings 11 is selectedsuch that the legs 3, in the folded state, can assume a position inwhich they are parallel to one another (see FIG. 8). The legs 3 arelatched in the respective operating positions, that is to say in the useposition (FIG. 1) and the storage position (FIG. 8), by a latchingprotuberance 23, which is formed by the end of a pin 24. The pin 24 isassociated with the leg 3 and can be displaced out of a latching opening25, 25′ by pressure counter to the force of a spring 27. The latchingpin 24 is retained in its spring-biased position by a split pin 26.

As can be gathered from FIG. 10, the pivot axis of the rotary bearing 11runs obliquely in relation to the horizontal. The pivot axis 11 isformed, on the one hand, by the cross-member 18, or by the leg fastening19 formed thereby, and, on the other hand, by an inner bearing plate 28,which is likewise formed by a punched and bent part and is located inthe inner cavity of the cross-member 18.

One of the two pairs of legs associated with a cross-member 18 in eachcase has running wheels 21, which are mounted on the respective leg 3 bya fork 20. In the elevated, use position, the running wheels 21 arespaced apart from the underlying surface. In the folded position (FIG.8), the folded cross-cut saw stand can be transported via these runningrollers 21.

The legs 3 are height-adjustable. For this purpose, the legs 3 haveinner extension portions. The legs 3, like the frame legs 2, 2′, 2″, areformed by tubes, namely quadrilateral tubes, and have inner tubes forextension purposes. The inner tubes are fixed to the outer tubes byclamping screws (not illustrated).

The apparatus also functions as follows.

In the storage position, the legs 3 are folded up. They are locatedparallel to one another and parallel to the frame legs 2. By virtue ofthe latching rotuberances 23 being subjected to pressure actuation,these protuberances can be displaced out of the latching cutouts 25′.The legs 3 can thus be pivoted until the latching protuberances 23engage in the latching cutouts 25. This operation is carried out for allfour legs 3 until the use position illustrated in FIG. 1 has beenreached. The cross-cut saw screwed onto the carrying plates 6 can bemounted on the frame together with the carrying plates 6. The brackets 5provide for the arresting action. Precision adjustment of the positionof the cross-cut saw (not illustrated) can take place in that thecarrying plates 6, on the one hand, are displaced in the frameinterspace 8, together with the brackets 5, in the direction in whichthe carrying body 4 extends and, on the other hand, transversely to thecarrying plates 6.

The height position of the carrying shoulders 16 can be adjusted in theabove described manner to the level of the cross-cut saw stand, so thatall the carrying shoulders 16 are aligned horizontally with the surfaceof the cross-cut saw stand.

Reference number 29 illustrates internally threaded screw-in openings inthe leg 3. Clamping screws can be screwed into these screw-in openings29. The end surfaces of the clamping screws press against inner tubes,which can thus be fixed. This makes the height adjustment possible.

It is also possible in this way to secure the extensions 12 in thetubular frames 2, 2′, 2″. This can be gathered from FIG. 14 inparticular. The internal thread into which a clamping screw 31 can bescrewed is formed here by a nut 32 welded onto the tube 2′.

In order to prevent the extension 12 from being drawn all the way out ofthe tube 2′, a latching device 30, 33, 34 is provided. This comprises alatching stub 30 which is seated at the end of a leaf spring 33, whichis bent in a U-shaped manner. This leaf spring 33 is pushed into the endportion of the quadrilateral tube which forms the extension 12. In thiscase, the latching stub 30 projects through an opening 35 in theextension 12. The latching stub 30 can latch with the tubular-frame leg2′ by penetrating into an opening 34 there. In order to release thelatching, an external pressure has to be exerted on the latching stub30. The latching stub is thus displaced out of the opening 34. If thisis accompanied by the extension 12 being displaced linearly within thetubular leg 2′, then the latching stub 30 engages against the inner wallof the tubular-frame leg 2′.

In the same way, it is also possible to provide for latching on the legs3, in order to prevent the inner tubes from being drawn all the way outof the legs.

All features disclosed are (in themselves) pertinent to the invention.The disclosure content of the associated priority documents (copy of theprior application) is hereby also included in full in the disclosure ofthe application, also for the purpose of incorporating features of thesedocuments in claims of the present application.

It should be understood that various changes and modifications to thepresently preferred embodiments described herein will be apparent tothose skilled in the art. Such changes and modifications can be madewithout departing from the spirit and scope of the present invention andwithout diminishing its intended advantages. It is therefore intendedthat such changes and modifications be covered by the appended claims.

1-14. (canceled)
 15. A folding stand for a cross-cut saw or the like, comprising: an elongate carrying body having ends on which legs are articulated, the legs being pivotal from a storage position, in which the legs are located generally parallel to the carrying body, into a use position, in which the legs are located trapezoidally in relation to one another, and a securing structure capable of releasably mounting the cross-cut saw on the carrying body, wherein the carrying body comprises a frame and the securing structure comprises brackets interacting with the frame.
 16. The folding stand according to claim 15, wherein carrying plates which can be positioned on the frame, and on which the cross-cut saw can be fastened, are clamped against the frame by the brackets engaging through the frame and interacting with pressure-exerting strips disposed on an underside of the frame.
 17. The folding stand according to claim 16, wherein the brackets and the pressure-exerting strips are formed by punched and bent parts which have crosspieces or crosspiece portions projecting into a frame interspace.
 18. The folding stand according to claim 15, wherein the brackets have an engagement edge engaging in a groove of the carrying plate.
 19. The folding stand according to claim 15, wherein the frame is a tubular frame having quadrilateral tubular-frame legs connected at ends to cross-members which provide pivot bearings for the legs.
 20. The folding stand according to claim 19, wherein at least two of the legs have extensions which can be drawn telescopically out of the tubes.
 21. The folding stand according to claim 20, wherein the extensions have support carriers at free ends which carry height-adjustable workpiece support carriers.
 22. The folding stand according to claim 21, wherein the workpiece support has a length/width stop.
 23. The folding stand according to claim 22, wherein the length/width stop is configured as a wire which is bent at an angle, can be adjusted transversely to a direction in which the extension extends and projects beyond a carrying shoulder, and which is associated in a T-shaped manner with workpiece carriers.
 24. The folding stand according to claim 23, wherein the carrying shoulder has a rounded U-profile which can be tilted stiffly through an angle about a mounting pin on the workpiece carrier.
 25. The folding stand according to claim 23, wherein the workpiece carriers are mounted in guide-tube portions.
 26. The folding stand according to claim 15, wherein workpiece carriers are disposed at an ends of the carrying body.
 27. The folding stand according to claim 15, wherein the legs are height-adjustable.
 28. The folding stand according to claim 15, wherein rollers are associated with the legs and are oriented downward in the storage position.
 29. A tool stand, comprising: a carrying support frame; legs extending downward from the carrying support frame; a tool mounting base positioned on top of the carrying support frame; and a clamp engaged with the carrying support frame and having a protruding lip releasably engaged with the tool mounting base.
 30. The tool stand of claim 29, wherein the tool mounting base further comprises a recess, and the protruding lip extends into the recess.
 31. The tool stand of claim 29, further comprising another clamp engaged with the carrying support frame and having a protruding lip engaged with the tool mounting base, the clamps positioned at opposite ends of the tool mounting base.
 32. The tool stand of claim 31, wherein the tool mounting base has first and second recesses in a top surface of the tool mounting base, each protruding lip extending into one of the recesses.
 33. The tool stand of claim 29, wherein the tool mounting base comprises a plurality of separate tool mounting base portions.
 34. The tool stand of claim 29, wherein the tool mounting base has a width wider than a width of the clamp and the width of the clamp is wider than a width of the carrying support frame.
 35. The tool stand of claim 29, wherein the clamp further comprises: an upper clamp portion positioned above the carrying support frame; and a lower clamp positioned below the carrying support frame; wherein clamping force biases the upper and lower clamps toward each other.
 36. The tool stand of claim 35, wherein: the carrying support frame further comprises front and back rails separated by an intermediate space; and the upper clamp further comprises an upper clamp alignment projection extending into the intermediate space. 